General Info

OpenAlex and Open Science

• Open Data
• Open Source Code
• Nice Web User Interface
• Free API access
• Free Data Snapshot

OpenAlex Coverage

OpenAlex Sources

OpenAlex Data Entities

Web Interface

Important points about Search Terms

• Use AND, OR, NOT in capital letters
• Use " to search for exact phrases
• Use ( and ) to group terms
• Wildcards *? are not supported
• Stemming is used, so fish will also find fishing

Search Terms

Search Terms

library(openalexR)
st <- paste0(
    '
    (biodiversity AND "climate change") AND,
    ("ecosystem services" OR "ecosystem functions") AND
    "land use" AND
    conflict AND
    polar
    '
)

openalexR::oa_fetch(
    entity = "works",
    search = st,
    count_only = TRUE,
    verbose = TRUE
)

     count db_response_time_ms page per_page
[1,]   638                 623    1        1

Snowball Search

Snowball Search

library(openalexR)
dois <- c(
    "10.1016/j.marpol.2023.105710",
    "10.1007/s13280-014-0582-z",
    "10.1016/j.cosust.2022.101160"
)
key_works <- oa_fetch(
    entity = "works",
    doi = dois,
    verbose = TRUE
)
snowball <- oa_snowball(
    identifier = key_works$id,
    verbose = TRUE
)
snowball